Better robots and that are not very expensive. an easier way for salt water change into fresh water fasting without so much money. <span />
This is a tuff question because there are a lot of drugs that if misused could cause this problem. I wish this was multiple choice. But im going with "Oxycodone" as my answer
Since narcolepsy is a chronic sleep disorder that causes overwhelming daytime drowsiness, it usually results in overwhelming drowsiness. So, a cause could be not getting enough sleep.